All this is going to do is open the door to trouble. If you get one witless one region, you are more likely to see trouble resulting when people don't want the witlesses. When a different witless came to the door, the householders wouldn't recognize it. This is more likely to result in pepper sprayings, dogs sicced on people, and even shootings because the same person is going to be pressured into returning on householders where clear disinterest was expressed.
If they think they are going to get Armageddon here sooner by getting virtually 100% of people against the witlesses, they have another thing coming. Putting one person alone, or in pairs, in a territory is going to do this all the more quickly. They are more likely to get called on whether they like it or not, and that's what is going to turn householders on the witlesses. And, all it takes is a few major embarrassments about hiding pedophiles or some of the hate speech showing up in recent washtowel study articles, and householders are going to be even more against it. Whoever has to work in the same area all the time is going to look like a dork--and could be targeted for burglaries where they trash the place if they work the areas where they live.
Regardless of what the householders think of it, it will lead to more stagnation. Every witless currently has something like 40 or 50 different territories, and could work any one of them on any given day. Under this stupid arrangement, each witless will have the same territory to work. They will get the same 200 or so doors to knock on, all the time. This will narrow the range of experiences for each witless, and stagnation will result even worse than now. And, they will work with the same partner all the time--even worse than now. That is another dimension of stagnation--what happens when one of that team wants to control the other or if they don't agree on basic things? Plus, what happens if someone gets sick and can't go out in field circus? What happens if one of them moves out of the territory?
And, what if I was still in, got assigned a small territory, and was doing pretty well--until one day I got a job offer in New Zealand out of nowhere? And a visa offer based on that? And a pink slip from my present job (the store closed down)? They are counting on me to get those people into the cancer, and suddenly I am no longer around. Who is going to fill in now? And, what if someone else gets a 6-month "where the need is greater" assignment in Nigeria? Or, someone who was a pious-sneer can't take the freezing winters any more and moves to North Carolina? These situations would lead someone else to get extra work--and, that can only happen so long before people start dogging their assignments. At which point, they are pretty much screwed.